JPH025571Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The communication equipment casing of the invention is used, for example, as a casing for a CATV amplifier.

(Prior Art) As shown in FIG. 7, a conventional communication device casing consists of a die-cast body a and a lid b.
Since the main body a and the lid b have completely different shapes, they have conventionally been molded separately using different molds.

(Problems to be solved by the invention) There were problems in that the mold cost was high because separate molds were used, and it took time to manufacture the molds.

(Means for solving the problem) The purpose of the present invention is to solve the above problem by making the shape and dimensions of the main body and the lid the same except for the stopper seat, so that the main body and the lid can be made in one mold. The purpose is to make it possible to mold.

In the communication device casing of the present invention, a main body 2 having a connector seat 1 and a lid body 3 not having a connector seat 1 are connected by a hinge 4 so as to be freely openable and closable, and opposing edges 5a of the main body 2 and the lid body 3, 5b, a waterproof packing groove 6 and an electromagnetic shielding groove 7 are formed, a waterproof packing 8 is fitted into the waterproof packing groove 6, and an electromagnetic shielding packing 9 is fitted into the electromagnetic shielding groove 7.
The shape and dimensions of the part excluding the plug seat 1 of the lid body 3
Two hinge pieces 11 and 12 are formed at unequal length positions from the width direction center O-O of one side 10 of the main body 2 and the lid 3.

(Example) The main body 2 is molded by aluminum die casting using four molds A, B, C, and D, which can be disassembled as shown in FIG. In this case, molds C and D have a nested structure so that they can be replaced with molds E and F having the shape shown in FIG. ，
Molds E and F are used when molding the lid 3 without the stopper seat 1 using D. If molds C and D are used, hot water will flow into the recess G and the plug seat 1 will be formed.

When forming the main body 2 and the lid 3, the hinge pieces 11 and 12 that constitute the hinge 4 are also integrally molded. These hinge pieces 11, 12 are connected to the main body 2, as shown in FIG.
Two pieces are provided at two positions on the left and right sides of one side 10 of the lid body 3. In addition, the hinge pieces 11 and 12 are formed at unequal lengths at different distances L1 and L2 from the center portions of the main body 2 and the lid 3 in the width direction (the position of the O-O line). Further, the hinge pieces 11 and 12 have horizontal holes for connection.

As shown in FIG. 2, the main body 2 and the lid 3 are connected by fitting their hinge pieces 11 and 12 alternately, and in this state, the shafts are passed through the horizontal holes of the hinge pieces 11 and 12 so that they can be opened and closed. .

The waterproof gasket groove 6 is formed around the entire circumference of the opposing edges 5a and 5b of the main body 2 and the lid 3, respectively.

The electromagnetic shielding groove 7 is formed only on half of the opposing edges 5a and 5b of the main body 2 and the lid 3, respectively. As a result, when the main body 2 and the lid 3, which have the same shape and dimensions except for the plug seat 1, are connected as shown in FIG. 2, the electromagnetic shielding groove 7 of the main body 2 and the electromagnetic shielding groove of the lid 3 The positions of the electromagnetic shield grooves 7 are reversed left and right so that both electromagnetic shield grooves 7 go around the opposing edges 5a and 5b.

As the electromagnetic shielding gasket 9 that fits into the electromagnetic shielding groove 7, for example, a conventionally used string-like sponge whose entire circumference is covered with a metal net is used.

In order to ensure the electromagnetic shielding effect, the electromagnetic shielding groove 7 should be made slightly longer than half the circumference of the opposing edges 5a and 5b, and the receiving portion 15 should be formed at the end of the groove 7, the area of which is larger than that of the groove 7. Good. In this way, when the electromagnetic shielding gasket 9 is fitted into both the electromagnetic shielding grooves 7 of the main body 2 and the lid 3 and the main body 2 and the lid 3 are closed, the ends of the gasket 9 overlap each other and the gasket 9 is closed. There is no cut between the ends of the 9, and the electromagnetic shielding effect is perfect. In this case, the ends of the overlapping electromagnetic shielding gaskets 9 are slightly crushed and spread laterally, but this is because the electromagnetic shielding groove 7
The main body 2 and the lid body 3 are accommodated in the accommodation part 15 at the end of the
When the two are closed, there is no gap between the opposing edges 5a and 5b.

Waterproof packing 8 inserted into waterproof packing groove 6
A conventionally used rubber gasket, plastic gasket, or other appropriate gasket is used, and this is inserted into the waterproof gasket grooves 6 of both the main body 2 and the lid 3.

(Effects of the invention) The communication device casing of the invention has the following various effects.

(1) Since the shape and dimensions of the main body 2 are the same as the shape and dimensions of the lid body 3 except for the part of the valve seat 1,
Of the molds used for molding, mold C for the connector seat part,
D has a replaceable nested structure, and by simply replacing it, the main body 2 and the lid 3 can be molded using the same mold.

(2) Since the main body 2 and the lid 3 can be molded using the same mold, the mold cost and the time required to manufacture the mold can be halved.
The manufacturing cost of the casing is reduced, and an inexpensive casing can be provided.

(3) Hinge pieces 1 formed on each of the main body 2 and the lid 3
1 and 12 are formed at positions of unequal lengths from the widthwise center of the main body 2 or the lid 3, so that the hinge piece 11 of the main body and the hinge piece 12 of the lid are fitted together as shown in FIG. When the main body 2 and the lid body 3 are connected,
The main body 2 and the lid 3 do not shift and protrude laterally in the width direction.

(4) If the electromagnetic shielding grooves 6 are formed on each half circumference of the opposing edges 5a and 5b of the main body 2 and the lid 3 as described in claim 2 of the utility model registration, the main body and the lid can be formed as shown in FIG. When connected like this, the electromagnetic shielding groove 7 of both bodies goes around the opposite edges 5a and 5b. Therefore, by fitting the electromagnetic shielding gaskets 9 into the respective electromagnetic shielding grooves 7, when the main body and the lid are closed, the entire circumference of the main body and the lid will be reliably electromagnetically shielded.

(5) As described in claim 2 of the utility model registration, if the housing portion 15 is formed at the end of the electromagnetic shielding groove 6, the ends of the electromagnetic shielding packing 9 that fit into the main body and the lid will overlap. Even if the end portion is crushed, that portion is accommodated in the accommodating portion 15, so that no gap is created between the opposing edges 5a, 5b of the main body and the lid. This ensures airtightness.

(6) If the electromagnetic shield grooves 6 are formed half a circumference each on the opposing edges 5a and 5b of the main body 2 and the lid 3, it is economical because if the electromagnetic shield gasket 9 is damaged, only the damaged gasket on the half circumference needs to be replaced. be.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the casing of the present invention, Fig. 2 is a plan view of the casing of the invention with the lid open, and Fig. 3 is an inside plan view of the casing. Figure 4 is a vertical cross-sectional view of the case with the packing fitted into the case, and Figure 5
Figure 6 is an explanatory diagram of the molding of the main body and lid, Figure 7
The figure is a side view of a conventional casing. 1 is the valve seat, 2 is the main body, 3 is the lid, 4 is the hinge,
5a and 5b are opposing edges, 6 is a waterproof gasket groove, 7 is an electromagnetic shield groove, 8 is a waterproof gasket, 9 is an electromagnetic shield gasket, and 11 and 12 are hinge pieces.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A main body having a stopper seat and a lid body without a stopper seat are connected by a hinge so as to be openable and closable, and a waterproof gasket groove is provided on the opposite edge of each of the main body and the cover body. In the case where an electromagnetic shield groove is formed, a waterproof gasket is fitted into the waterproof gasket groove, and an electromagnetic shield gasket is fitted into the shield groove, the shape and dimensions of the part of the main body excluding the plug seat are as follows: 1. A communication device casing, characterized in that the shape and dimensions are the same, and hinge pieces are formed at positions of unequal lengths from the widthwise center of one side of each of the main body and the lid. (2) Utility model registration claim 1, in which an electromagnetic shielding groove is formed at least half the circumference of the opposing edges of the main body and the lid, and a housing portion is formed at the end of this groove.
Housing for communication equipment as described in section.